Påverkan på kortisolnivåer efter styrketräning med tandskydd

[King Grub]

Research has suggested mouthpiece use during exercise results in an increase in muscle strength and endurance. However, the research is difficult to replicate, and the methodology suggested measures that were too subjective to determine a mouthpiece effect. Thus, the purpose of this study was to use an objective measure to determine a possible physiological mechanism occurring during and after exercise with mouthpiece use. A within-subjects design was used in which 28 division I football players, aged 18-22 years, performed 2 identical bouts of a 1-hour intense resistance exercise, with each subject being randomly assigned the use of a custom-fit mouthpiece either during the first or second session. During both exercise sessions, saliva was analyzed for cortisol at the following time points: pre-exercise, 25, 45, and 60 minutes of exercise, and 10 minutes postexercise. The results revealed a significant difference in cortisol levels with the use of a mouthpiece vs. no mouthpiece (p = 0.019) at 10 minutes postexercise. Additionally, although the expected increase in cortisol levels from pre to 10 minutes postexercise was present in the no-mouthpiece group (p = 0.01), no such increase was observed in the mouthpiece group. These observations are most likely because of the decrease in cortisol from post to 10 minutes post (p = 0.04) in the mouthpiece group. These data demonstrate that although cortisol continued to increase in the no-mouthpiece session, there was a significant decrease in cortisol in the no-mouthpiece condition 10 minutes postexercise.

J Strength Cond Res. 2011 Sep 7. The Effects of Mouthpiece Use on Cortisol Levels During an Intense Bout of Resistance Exercise.

[JB12K]

:laugh: Vem är det som sponsrar sådan här forskning?

Edit: Och hur kommer det sig att man misstänker att det skulle vara en skillnad öht?

[pialia]

:laugh: Vem är det som sponsrar sådan här forskning?

Edit: Och hur kommer det sig att man misstänker att det skulle vara en skillnad öht?

Tandskyddstillverkare? *rolleyes*

[King Grub]

Although mouth guards were originally designed for injury prevention, even elite athletes are now using performance mouth guards to improve athletic success. While expensive custom models are available, the efficacy of such over-the-counter models are not well known. Some athletes remain wary of the perceived potential for detriments using a mouth guard to their performance. Thus, the purpose of this study was to examine various physical performance tests when using a mouth guard including a customized over-the-counter mouth guard. Twenty-six trained men (M) (25±4 yr; 1.78±0.07 m; 83.3±11.4 kg) and 24 trained women (W) (23±3 yr; 1.65±0.08 m; 62.6±7.8 kg) volunteered for the investigation. Subjects completed a familiarization period and then balanced and randomized treatment conditions which included: 1. a customized mouth guard, Power Balance performance mouth guard (PB MG), 2. a regular over the counter boil-and-bite mouth guard (Reg MG), and 3. no mouth guard (No MG) treatment condition. At each visit, subjects completed a testing protocol that was sequenced in the following order: sit-and-reach flexibility, medial-lateral balance, visual reaction time, vertical jump, 10m sprint, bench throw, and Plyo Press Power quotient (3PQ). Heart rate and rating of perceived exertion (RPE) were recorded around the 3PQ. Significance was set at p ≤ 0.05. Expected significant sex differences existed for all power, strength and speed variables. Bench throw power (W) and force (N) were significantly higher under PB MG than either Reg MG or No MG or in both men and women. The 3PQ power and force production were higher than the other two treatments for the PB MG for men only. There were no significant differences for treatment conditions in heart rate or rating of perceived exertion following the 3PQ test. Men were better able to maintain significantly higher 3PQ power production under PB MG treatment condition compared to the other two treatment conditions. Rate of power development was significantly higher in men for the vertical jump when using the PB MG compared to other treatment condition in men only. No differences were observed in flexibility, balance, visual reaction time, or sprint time. The PB MG performance mouth guard improves performance of upper-body loaded power exercises in both men and women and lower body power exercise in men without compromising performance on any other performance parameters.

J Strength Cond Res. 2012 Jan 25. The Effects of a Customized Over-the-Counter Mouth Guard on Neuromuscular Force and Power Production in Trained Men and Women.

[z_bumbi]

:laugh: Vem är det som sponsrar sådan här forskning?

Edit: Och hur kommer det sig att man misstänker att det skulle vara en skillnad öht?

Sent svar.
Tittar man på någon som ska ta i rejält eller göra något som kräver mycket balans så är käkarna aktiva och en del får t o m tandskador eftersom de biter ihop så mycket. Så att det skulle kunna ha en betydelse är inte så långsökt som det vid första anblicken kan verka.

[garluch]

Sent svar.
Tittar man på någon som ska ta i rejält eller göra något som kräver mycket balans så är käkarna aktiva och en del får t o m tandskador eftersom de biter ihop så mycket. Så att det skulle kunna ha en betydelse är inte så långsökt som det vid första anblicken kan verka.
Kör inte Brian Shaw med tandskydd i vissa grenar? Har för mig att jag såg det på 2011 WSM.

[exevision]

Vart kan man köpa diskreta/ej så synliga tandskydd?

[mattilainen]

jag körde knäböj med mitt tandskydd som jag har på kampsporten och visst kändes detr bra att kunna bita ihop lite och ta i :) Kanske detta osm gör att man klarar mer :p Eller placebo

[MilkmaN]

Nästa optinoja, "Glömt mitt tandskydd - sket i passet!"

[Sheogorath]

http://e.static.memegenerator.net/cache/instances/500x/13/13602/13928504.jpg

[dream_theater_]

http://e.static.memegenerator.net/cache/instances/500x/13/13602/13928504.jpg

Haha, kunglig!!!

[dream_theater_]

Vart kan man köpa diskreta/ej så synliga tandskydd?

Du ser ut som ett mongo oavsett om det är synligt eller inte, så köp ett som är synligt så slipper folk fråga.

[cero]

Nästa optinoja, "Glömt mitt tandskydd - sket i passet!"

Vart kan man köpa diskreta/ej så synliga tandskydd?

Detta har potential. :laugh:

[baggard]

Har fan tänkt att jag skulle behöva det ett par gånger. Ingenting jag någonsin skulle genomföra troligtvis men biter ihop en del när jag kör tungt faktiskt.

[krubkungen]

http://e.static.memegenerator.net/cache/instances/500x/13/13602/13928504.jpg

Underbart! :laugh:

[King Grub]

Due to the relative newness of such products, there are few investigations into using performance mouthpieces during sport and physical activity to substantiate claims of performance enhancement. The purpose of this study was to investigate the acute effect of a commercially available, non-injury preventive, performance mouthpiece on practical, acute performance measures of power and strength. A within subjects design was used to evaluate twenty one (N=21) recreationally trained, college aged males on the performance of a maximum countermovement vertical jump (CMVJ) from a force platform and one repetition maximum (1RM) bench press exercise for the following conditions: with mouthpiece (MP) and without mouthpiece (noMP). Rate of force development (RFD) and peak vertical force (PF) were derived from force platform data. Statistical analysis revealed no significant differences between conditions for CMVJ height (p=0.13), RFD @ 200ms (p=0.09), PF (p=0.08), and 1RM Bench Press (p=0.45). These data indicate that the use of this particular jaw aligning mouthpiece specifically in an attempt to produce an ergogenic effect on performance is unwarranted.

J Strength Cond Res. 2013 Sep 14. THE ACUTE EFFECT OF A COMMERCIAL BITE-ALIGNING MOUTHPIECE ON STRENGTH AND POWER IN RECREATIONALLY TRAINED MEN.